From: Theodore Tso <tytso@mit.edu>
To: Chris Mason <chris.mason@oracle.com>
Cc: Andi Kleen <andi@firstfloor.org>,
Peter Zijlstra <peterz@infradead.org>,
linux-btrfs <linux-btrfs@vger.kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>
Subject: Re: Btrfs v0.16 released
Date: Sat, 16 Aug 2008 15:27:50 -0400 [thread overview]
Message-ID: <20080816192749.GA8774@mit.edu> (raw)
In-Reply-To: <1218910210.19495.25.camel@think.oraclecorp.com>
On Sat, Aug 16, 2008 at 02:10:10PM -0400, Chris Mason wrote:
>
> I tried just the writeback_index patch and got only 4 fragmented files
> on ext4 after a compilebench run. Then I tried again and got 1200.
> Seems there is something timing dependent in here ;)
>
Yeah, the patch Aneesh sent to change where we added the inode to the
dirty list was false lead. The right fix is in the ext4 patch queue
now. I think we have the problem licked and a quick test showed it
increased the compilebench MB/s by a very tiny amount (enough so that
I wasnt sure whether or not it was measurement error), but it does
avoid the needly fragmentation.
- Ted
prev parent reply other threads:[~2008-08-16 19:27 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-05 19:01 Btrfs v0.16 released Chris Mason
2008-08-07 9:08 ` Peter Zijlstra
2008-08-07 10:34 ` Chris Mason
2008-08-07 14:58 ` Chris Friesen
2008-08-07 15:07 ` tvrtko.ursulin
2008-08-07 9:14 ` Peter Zijlstra
2008-08-07 10:39 ` Chris Mason
[not found] ` <3da3b5b40808070703x4cf49471q6acc00351ba019d7@mail.gmail.com>
2008-08-07 14:06 ` Chris Mason
2008-08-07 18:02 ` Andi Kleen
2008-08-08 18:48 ` Chris Mason
2008-08-08 21:56 ` Andi Kleen
2008-08-09 1:19 ` Theodore Tso
2008-08-09 1:23 ` Andi Kleen
[not found] ` <20080809012322.GF9038@one.firstfloor.org>
2008-08-09 1:43 ` Theodore Tso
2008-08-14 21:00 ` Chris Mason
2008-08-14 21:17 ` Andi Kleen
2008-08-15 1:25 ` Chris Mason
2008-08-15 1:39 ` Andi Kleen
2008-08-15 13:00 ` Chris Mason
2008-08-16 19:26 ` Szabolcs Szakacsits
2008-08-18 13:52 ` Chris Mason
2008-08-18 17:37 ` Szabolcs Szakacsits
2008-08-14 23:44 ` Theodore Tso
2008-08-15 1:10 ` Chris Mason
2008-08-15 12:46 ` Chris Mason
2008-08-15 13:45 ` Theodore Tso
2008-08-15 17:52 ` Chris Mason
2008-08-15 19:59 ` Theodore Tso
2008-08-15 20:37 ` Chris Mason
2008-08-16 18:10 ` Chris Mason
2008-08-16 19:27 ` Theodore Tso [this message]
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